RRB NTPC 17 January 2017 Paper

(1) P = 2000, R = 5% at C.I., T= 2yrs
Interest for first year =$\frac{\left(2000\times 5\right)}{100}$= 100
So, amount at the end of 1st year =2000+100 =2100
Now, applying interest on this amount and 2000 interested extra,P becomes2100+2000 = 4100

R= 5%

Interest for 2nd year =$\frac{\left(4100\times 5\right)}{100}$= 205
Amount at the end of 2nd year =4100+205 = 4305